Side surface of luggage



FIG. 1 is a perspective view of a side surface of luggage, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top view plan thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines illustrate portions of the luggage and form no part of the claimed design. 

CLAIM The ornamental design for a side surface of luggage, as shown and described. 